/*
package edu.mbb.cloud.nacos;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import javax.annotation.Resource;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.springframework.stereotype.Component;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

*/
/**
 * 模拟浏览器请求任何一个网址
 * @author
 *//*

public class HttpUtil
{
    */
/* 文件工具类 *//*



    public class TrustAnyHostnameVerifier implements HostnameVerifier
    {
        public boolean verify(String hostname, SSLSession session)
        {
            // 直接返回true
            return true;
        }
    }
    */
/**
     * 输入一个url,
     * 返回这个url对应的html代码
     *
     * @return 返回网址对应的html代码
     *//*

    public static String methodGet(String urlStr)
    {
        //ConstatFinalUtil.SYS_LOGGER.info("--methodGet--url:{}",urlStr);
        StringBuffer sb = new StringBuffer() ;
        try
        {
            URL url = new URL(urlStr);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            */
/* 获取网址对应的输入流和输出流 *//*

            InputStream is = connection.getInputStream() ;

            BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));

            String line = "" ;
            while((line = br.readLine()) != null)
            {
                sb.append(line);
            }
        } catch (Exception e)
        {
            e.printStackTrace();
        }
        return sb.toString() ;
    }

    */
/**
     * 输入一个url,
     * 返回这个url对应的html代码
     *
     * @param paramsMap	提交参数;键=值
     * @return 返回网址对应的html代码
     *//*

    public static String methodPost(String urlStr,Map<String, String> paramsMap)
    {
        //ConstatFinalUtil.SYS_LOGGER.info("--methodGet--url:{}",urlStr);
        StringBuffer sb = new StringBuffer() ;
        try
        {
            URL url = new URL(urlStr);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection() ;

            */
/* Post请求,必须加以下操作 *//*

            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestMethod("POST");

            */
/* 获取网址对应的输入流和输出流 *//*

            OutputStream os = connection.getOutputStream() ;
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));

            */
/* 先向服务器写数据
             * 如何将我们的参数写到输出流呢???
             * 得遵循HTTP协议,看浏览器怎么做,我们也怎么做
             *
             * URL get中的字符串
             * method=submit&email=aaa&password=bbbb
             *  *//*

            StringBuffer paramSb = new StringBuffer() ;
            for (Iterator iterator = paramsMap.entrySet().iterator(); iterator.hasNext();)
            {
                Entry me = (Entry) iterator.next();
                String key = me.getKey() + "";
                String value = me.getValue() + "" ;
                paramSb.append(key + "=" + value + "&");
            }
            */
/*
             * method=submit&email=aaa&password=bbbb
             * email=bb&method=submit&password=cc
             * *//*

            bw.write(paramSb.toString());
            bw.flush();
            bw.close();

            InputStream is = connection.getInputStream() ;
            BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));

            String line = "" ;
            while((line = br.readLine()) != null)
            {
                sb.append(line);
            }

            br.close();
        } catch (Exception e)
        {
            e.printStackTrace();
        }
        return sb.toString() ;
    }

    public static void main(String[] args)
    {
        HttpUtil httpUtil = new HttpUtil() ;

		*/
/*String url = "http://c.v.qq.com/vchannelinfo?otype=json&uin=599568d32c9189aaabe3c6c6aff3832c&qm=1&pagenum=3&num=10&sorttype=0&orderflag=0&callback=jQuery191013239971445429688_1498793173745&low_login=1&_=1498793173756" ;
		String res = httpUtil.methodGet(url);
		System.out.println(res);*//*

        String ceshString ="{json={\"method\":\"verifyAdminsAuth\",\"data\":{\"currentUrl\":\"/carConAll-web-back/back/vehicle/vehHistoryList.htm?from=home\",\"adminsId\":2},\"encrypt\":\"e12299c068c5e8dd3a1e30ed9780b82721940a7779abfeaecbb409a9466fd673\",\"version\":\"1\",\"pubKey\":\"\"}}";
        JSONObject parse = (JSONObject) JSON.parse(ceshString);
        */
/*
         * String url = "http://localhost:10001/shop-web-head/insert.jsp" ;
         * Map<String,String> paramsMap = new HashMap<String, String>();
         * paramsMap.put("email", "bb"); paramsMap.put("password", "cc");
         * paramsMap.put("method", "submit"); String res =
         * httpUtil.methodPost(url,paramsMap);
         *//*

        System.out.println(parse);
    }

  */
/*  *//*
*/
/**
     * 下载文件
     *//*
*/
/*
    public boolean downLoadFile(Map<String, String> headerMap,Map<String, String> paramsMap,OutputStream os)
    {
        HttpURLConnection connect = null ;
        try
        {
            URL url = new URL(paramsMap.get("requestURL"));
            connect = (HttpURLConnection) url
                    .openConnection();
            connect.setConnectTimeout(3000);
            connect.setReadTimeout(3000);

            StringBuffer paramssb = new StringBuffer();
            for (Iterator iterator = paramsMap.entrySet().iterator(); iterator
                    .hasNext();)
            {
                Map.Entry me = (Map.Entry) iterator.next();
                if (!"requestURL".equalsIgnoreCase(me.getKey() + "") && !"retry".equalsIgnoreCase(me.getKey() + ""))
                {
                    paramssb.append(me.getKey() + "=" + me.getValue() + "&");
                }
            }

            if (paramssb.toString().endsWith("&"))
            {
                paramssb.delete(paramssb.length() - 1, paramssb.length());
            }
            connect.setRequestProperty(
                    "Cookie",
                    "Hm_lvt_2d57a0f88eed9744a82604dcfa102e49=1386575661; CNZZDATA5342694=cnzz_eid%3D1753424715-1386575827-http%253A%252F%252Fwww.btctrade.com%26ntime%3D1386750475%26cnzz_a%3D5%26ltime%3D1386750483033%26rtime%3D1; pgv_pvi=8171956224; __utma=252052442.1822116731.1386640814.1386741966.1386750468.3; __utmz=252052442.1386640814.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); wafenterurl=/; wafcookie=51a45a2229469ee92bbd8cc281e98e91; __utmb=252052442.1.10.1386750468; __utmc=252052442; wafverify=afe13eda6d99c7f141d7dd3966b59d9e; USER_PW=ab3f61ee826a95e51734cf7174100382; PHPSESSID=9f2c19d6ffd0ef808ba8bac0b74ab0f3; IESESSION=alive; pgv_si=s1618283520");
            connect.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0");

            for (Iterator iterator = headerMap.entrySet().iterator(); iterator
                    .hasNext();)
            {
                Entry me = (Entry) iterator.next();
                connect.setRequestProperty(me.getKey() + "", me.getValue() + "");
            }
            InputStream is =  connect.getInputStream() ;
            return this.fileUtil.copyFile(is, os);
        }catch (Exception e)
        {
            try
            {
                ConstatFinalUtil.SYS_LOGGER.info("http的Post请求失败了;响应码:{};请求头:{};请求体:{}",
                        connect != null ? connect.getResponseCode() : connect,headerMap,paramsMap,e);
                Thread.sleep(ConstatFinalUtil.PAGE_BATCH_SIZE);
            } catch (Exception e1)
            {
                e1.printStackTrace();
            }
        }
        return false;
    }*//*

    */
/**
     * 上传文件
     * @param requestMap 双传文件的信息
     * @return
     *//*

    public String methodUploadFile(Map<String, String> headerMap,Map<String, String> requestMap)
    {
        String urlStr = headerMap.get("requestURL");
        if(!urlStr.endsWith("?"))
        {
            urlStr = urlStr + "?" ;
        }
        for (Iterator iterator = requestMap.entrySet().iterator(); iterator.hasNext();)
        {
            Entry me = (Entry) iterator.next();
            String key = me.getKey() + "" ;
            String val = me.getValue() + "" ;
            urlStr = urlStr + "&" + key + "=" + val ;
        }
        */
/* 返回值 *//*

        StringBuffer sbRes = new StringBuffer() ;
        String filePath = requestMap.get("filePath");
        try
        {
            // 换行符
            final String newLine = "\r\n";
            final String boundaryPrefix = "--";
            // 定义数据分隔线
            String BOUNDARY = "========7d4a6d158c9";
            // 服务器的域名
            URL url = new URL(urlStr);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            // 设置为POST请求
            conn.setRequestMethod("POST");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            // 设置请求头参数
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Charsert", "UTF-8");
            conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);

            OutputStream out = new DataOutputStream(conn.getOutputStream());

            // 上传文件
            File file = new File(filePath);
            StringBuilder sb = new StringBuilder();
            sb.append(boundaryPrefix);
            sb.append(BOUNDARY);
            sb.append(newLine);
            // 文件参数,photo参数名可以随意修改
            sb.append("Content-Disposition: form-data;name=\"file\";filename=\"" + filePath + "\"" + newLine);
            sb.append("Content-Type:application/octet-stream");
            // 参数头设置完以后需要两个换行，然后才是参数内容
            sb.append(newLine);
            sb.append(newLine);

            // 将参数头的数据写入到输出流中
            out.write(sb.toString().getBytes());

            // 数据输入流,用于读取文件数据
            DataInputStream in = new DataInputStream(new FileInputStream(file));
            byte[] bufferOut = new byte[1024];
            int bytes = 0;
            // 每次读1KB数据,并且将文件数据写入到输出流中
            while ((bytes = in.read(bufferOut)) != -1)
            {
                out.write(bufferOut, 0, bytes);
            }
            // 最后添加换行
            out.write(newLine.getBytes());
            in.close();

            // 定义最后数据分隔线，即--加上BOUNDARY再加上--。
            byte[] end_data = (newLine + boundaryPrefix + BOUNDARY + boundaryPrefix + newLine).getBytes();
            // 写上结尾标识
            out.write(end_data);
            out.flush();
            out.close();

            // 定义BufferedReader输入流来读取URL的响应
            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line = null;
            while ((line = reader.readLine()) != null)
            {
                sbRes.append(line);
            }

        } catch (Exception e)
        {
            System.out.println("上传文件失败了;文件名:{}"+filePath );
            e.printStackTrace();
        }
        return sbRes.toString() ;
    }

    */
/**
     * Post请求
     *
     * @param headerMap
     *            请求头
     * @param paramsMap
     *            请求体参数
     * @return
     *//*

    public String methodPost(Map<String, String> headerMap,
                             Map<String, String> paramsMap)
    {
        StringBuffer sb = new StringBuffer();
        //如果是https协议
        if(paramsMap.get("requestURL").startsWith("https"))
        {
            return this.methodHttpsPost(headerMap, paramsMap);
        }

        // 连续请求多次
        for (int i = 0; i < 3; i++)
        {
            sb.delete(0, sb.length());
            HttpURLConnection connect = null ;
            try
            {
                URL url = new URL(paramsMap.get("requestURL"));
                connect = (HttpURLConnection) url
                        .openConnection();
                connect.setConnectTimeout(3000);
                connect.setReadTimeout(3000);
                connect.setDoInput(true);
                connect.setDoOutput(true);

                StringBuffer paramssb = new StringBuffer();
                for (Iterator iterator = paramsMap.entrySet().iterator(); iterator
                        .hasNext();)
                {
                    Map.Entry me = (Map.Entry) iterator.next();
                    if (!"requestURL".equalsIgnoreCase(me.getKey() + "") && !"retry".equalsIgnoreCase(me.getKey() + ""))
                    {
                        paramssb.append(me.getKey() + "=" + me.getValue() + "&");
                    }
                }

                if (paramssb.toString().endsWith("&"))
                {
                    paramssb.delete(paramssb.length() - 1, paramssb.length());
                }
                connect.setRequestProperty(
                        "Cookie",
                        "Hm_lvt_2d57a0f88eed9744a82604dcfa102e49=1386575661; CNZZDATA5342694=cnzz_eid%3D1753424715-1386575827-http%253A%252F%252Fwww.btctrade.com%26ntime%3D1386750475%26cnzz_a%3D5%26ltime%3D1386750483033%26rtime%3D1; pgv_pvi=8171956224; __utma=252052442.1822116731.1386640814.1386741966.1386750468.3; __utmz=252052442.1386640814.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); wafenterurl=/; wafcookie=51a45a2229469ee92bbd8cc281e98e91; __utmb=252052442.1.10.1386750468; __utmc=252052442; wafverify=afe13eda6d99c7f141d7dd3966b59d9e; USER_PW=ab3f61ee826a95e51734cf7174100382; PHPSESSID=9f2c19d6ffd0ef808ba8bac0b74ab0f3; IESESSION=alive; pgv_si=s1618283520");
                connect.setRequestProperty("User-Agent",
                        "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0");

                for (Iterator iterator = headerMap.entrySet().iterator(); iterator
                        .hasNext();)
                {
                    Entry me = (Entry) iterator.next();
                    connect.setRequestProperty(me.getKey() + "", me.getValue() + "");
                }


                BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
                        connect.getOutputStream()));
                bw.write(paramssb.toString());
                bw.flush();

                BufferedReader br = null ;
                //响应码成功
                if(connect.getResponseCode() == 200)
                {
                    br = new BufferedReader(new InputStreamReader(
                            connect.getInputStream(), "UTF-8"));
                }else
                {
                    if(connect.getErrorStream() != null)
                    {
                        br = new BufferedReader(new InputStreamReader(
                                connect.getErrorStream(), "UTF-8"));
                    }else
                    {
                        br = new BufferedReader(new InputStreamReader(
                                connect.getInputStream(), "UTF-8"));
                    }
                }

                String line = "";
                while ((line = br.readLine()) != null)
                {
                    sb.append(line.trim());
                }
                br.close();
                bw.close();

                //正常返回直接退出
                if(connect.getResponseCode() != 200)
                {
                    System.out.println("重试次数:"+i+",响应码:"+connect.getResponseCode()+";响应信息:"+connect.getResponseMessage()+";返回信息:"+sb+";请求头:{};请求体:{}");
                }
                break ;
            }catch (Exception e)
            {
                e.printStackTrace();
            }

            //重试机制
            if(!"true".equalsIgnoreCase(headerMap.get("retry")))
            {
                break ;
            }
        }
        //没有查询到数据,调用https
        if(sb.length() <= 0)
        {
            return this.methodHttpsPost(headerMap, paramsMap);
        }
        return sb.toString();
    }

    */
/**
     * HttpsPost请求
     *
     * @param headerMap
     *            请求头参数
     * @param paramsMap
     *            请求体参数
     * @return
     *//*

    public String methodHttpsPost(Map<String, String> headerMap,
                                  Map<String, String> paramsMap)
    {
        StringBuffer sb = new StringBuffer();
        // 连续请求多次
        for (int i = 0; i < 3; i++)
        {
            sb.delete(0, sb.length());
            HttpsURLConnection connect = null ;
            try
            {
                // Create a trust manager that does not validate certificate chains
                TrustManager[] trustAllCerts = new TrustManager[]
                        { new X509TrustManager()
                        {
                            public X509Certificate[] getAcceptedIssuers()
                            {
                                return null;
                            }

                            public void checkClientTrusted(X509Certificate[] certs,
                                                           String authType)
                            {
                            }

                            public void checkServerTrusted(X509Certificate[] certs,
                                                           String authType)
                            {
                            }
                        } };

                // Install the all-trusting trust manager

                SSLContext sc = SSLContext.getInstance("TLS");
                sc.init(null, trustAllCerts, new SecureRandom());
                HttpsURLConnection
                        .setDefaultSSLSocketFactory(sc.getSocketFactory());

                URL url = new URL(paramsMap.get("requestURL"));
                connect = (HttpsURLConnection) url
                        .openConnection();
                connect.setHostnameVerifier(new TrustAnyHostnameVerifier());
                connect.setConnectTimeout(3000);
                connect.setReadTimeout(3000);
                connect.setDoInput(true);
                connect.setDoOutput(true);

                connect.setRequestProperty(
                        "Cookie",
                        "Hm_lvt_2d57a0f88eed9744a82604dcfa102e49=1386575661; CNZZDATA5342694=cnzz_eid%3D1753424715-1386575827-http%253A%252F%252Fwww.btctrade.com%26ntime%3D1386750475%26cnzz_a%3D5%26ltime%3D1386750483033%26rtime%3D1; pgv_pvi=8171956224; __utma=252052442.1822116731.1386640814.1386741966.1386750468.3; __utmz=252052442.1386640814.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); wafenterurl=/; wafcookie=51a45a2229469ee92bbd8cc281e98e91; __utmb=252052442.1.10.1386750468; __utmc=252052442; wafverify=afe13eda6d99c7f141d7dd3966b59d9e; USER_PW=ab3f61ee826a95e51734cf7174100382; PHPSESSID=9f2c19d6ffd0ef808ba8bac0b74ab0f3; IESESSION=alive; pgv_si=s1618283520");
                connect.setRequestProperty("User-Agent",
                        "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0");

                StringBuffer paramssb = new StringBuffer();
                for (Iterator iterator = paramsMap.entrySet().iterator(); iterator
                        .hasNext();)
                {
                    Map.Entry me = (Map.Entry) iterator.next();
                    if (!"requestURL".equalsIgnoreCase(me.getKey() + ""))
                    {
                        paramssb.append(me.getKey() + "=" + me.getValue() + "&");
                    }
                }

                if (paramssb.toString().endsWith("&"))
                {
                    paramssb.delete(paramssb.length() - 1, paramssb.length());
                }
                // ConstatFinalUtil.LOGGER.info("-----"+ paramssb);
                for (Iterator iterator = headerMap.entrySet().iterator(); iterator
                        .hasNext();)
                {
                    Entry me = (Entry) iterator.next();
                    if (!"requestURL".equalsIgnoreCase(headerMap.get("requestURL")))
                    {
                        connect.setRequestProperty(me.getKey() + "", me.getValue()
                                + "");
                    }
                }
                connect.setRequestProperty(
                        "Cookie",
                        "Hm_lvt_2d57a0f88eed9744a82604dcfa102e49=1386575661; CNZZDATA5342694=cnzz_eid%3D1753424715-1386575827-http%253A%252F%252Fwww.btctrade.com%26ntime%3D1386750475%26cnzz_a%3D5%26ltime%3D1386750483033%26rtime%3D1; pgv_pvi=8171956224; __utma=252052442.1822116731.1386640814.1386741966.1386750468.3; __utmz=252052442.1386640814.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); wafenterurl=/; wafcookie=51a45a2229469ee92bbd8cc281e98e91; __utmb=252052442.1.10.1386750468; __utmc=252052442; wafverify=afe13eda6d99c7f141d7dd3966b59d9e; USER_PW=ab3f61ee826a95e51734cf7174100382; PHPSESSID=9f2c19d6ffd0ef808ba8bac0b74ab0f3; IESESSION=alive; pgv_si=s1618283520");
                connect.setRequestProperty("User-Agent",
                        "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0");


                BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
                        connect.getOutputStream()));
                bw.write(paramssb.toString());
                bw.flush();

                BufferedReader br = null ;
                //响应码成功
                if(connect.getResponseCode() == 200)
                {
                    br = new BufferedReader(new InputStreamReader(
                            connect.getInputStream(), "UTF-8"));
                }else
                {
                    if(connect.getErrorStream() != null)
                    {
                        br = new BufferedReader(new InputStreamReader(
                                connect.getErrorStream(), "UTF-8"));
                    }else
                    {
                        br = new BufferedReader(new InputStreamReader(
                                connect.getInputStream(), "UTF-8"));
                    }
                }

                String line = "";
                while ((line = br.readLine()) != null)
                {
                    sb.append(line.trim());
                }
                br.close();
                bw.close();

                //正常返回直接退出
                if(connect.getResponseCode() != 200)
                {
                    System.out.println("重试次数:"+i+",响应码:"+connect.getResponseCode()+";响应信息:"+connect.getResponseMessage()+";返回信息:"+sb+";请求头:"+headerMap+";请求体:"+paramsMap);
                }
                break ;
            } catch (Exception e)
            {
                try
                {

                    System.out.println("https的Post请求失败了重试次数:"+i+",响应码:"+connect.getResponseCode()+";响应信息:"+connect.getResponseMessage()+";返回信息:"+sb+";请求头:"+headerMap+";请求体:"+paramsMap);

                    Thread.sleep(1000);
                } catch (Exception e1)
                {
                    e1.printStackTrace();
                }
            }

            //重试机制
            if(!"true".equalsIgnoreCase(headerMap.get("retry")))
            {
                break ;
            }
        }
        return sb.toString();
    }


    //新增  百度AI api图片文字识别请求方法
    public static String post(String requestUrl, String accessToken, String params)
            throws Exception {
        String contentType = "application/x-www-form-urlencoded";
        return HttpUtil.post(requestUrl, accessToken, contentType, params);
    }

    public static String post(String requestUrl, String accessToken, String contentType, String params)
            throws Exception {
        String encoding = "UTF-8";
        if (requestUrl.contains("nlp")) {
            encoding = "GBK";
        }
        return HttpUtil.post(requestUrl, accessToken, contentType, params, encoding);
    }

    public static String post(String requestUrl, String accessToken, String contentType, String params, String encoding)
            throws Exception {
        String url = requestUrl + "?access_token=" + accessToken;
        return HttpUtil.postGeneralUrl(url, contentType, params, encoding);
    }

    public static String postGeneralUrl(String generalUrl, String contentType, String params, String encoding)
            throws Exception {
        URL url = new URL(generalUrl);
        // 打开和URL之间的连接
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("POST");
        // 设置通用的请求属性
        connection.setRequestProperty("Content-Type", contentType);
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setUseCaches(false);
        connection.setDoOutput(true);
        connection.setDoInput(true);

        // 得到请求的输出流对象
        DataOutputStream out = new DataOutputStream(connection.getOutputStream());
        out.write(params.getBytes(encoding));
        out.flush();
        out.close();

        // 建立实际的连接
        connection.connect();
        // 获取所有响应头字段
        Map<String, List<String>> headers = connection.getHeaderFields();
        // 遍历所有的响应头字段
        for (String key : headers.keySet()) {
            System.err.println(key + "--->" + headers.get(key));
        }
        // 定义 BufferedReader输入流来读取URL的响应
        BufferedReader in = null;
        in = new BufferedReader(
                new InputStreamReader(connection.getInputStream(), encoding));
        String result = "";
        String getLine;
        while ((getLine = in.readLine()) != null) {
            result += getLine;
        }
        in.close();
        System.err.println("result:" + result);
        return result;
    }


}*/
